光纤光栅振动传感器结构设计研究

Researchon Structure Des ignof Fiber Grating Vibration Sensor

传感技术是衡量一个国家信息化程度的重要标志。振动信号的检测在工业尤其在石油勘探方面有着重要作用。其中,基于光纤布拉格光栅(Fiber Bragg Grating,FBG)的振动传感器具有诸多优点而备受关注。简单介绍了FBG振动传感器的原理,并根据结构类型对近几年研发出的FBG振动传感器进行了分类和总结。阐述了四种FBG振动传感器的优缺点,并重点对悬臂梁式和柔性铰链式结构的FBG振动传感器进行了总结。接着从三个方向对现有的FBG振动传感器进行了分析并提出了优化建议。最后对FBG振动传感器的发展做出了预测与展望。

Sensing technology is an important symbol to measure the degree of informatization of a country.The detection of vibration signals plays an important role in industry,especially in the exploration of oil.The vibration sensor based on fiber Bragg grating(FBG)has attracted much attention because it has many advantages.In this paper,the principle of fiber Bragg grating vibration sensor is briefly introduced,and the FBG vibration sensor developed in recent years is classified and summarized according to its structure type.The advantages and disadvantages of four kinds of FBG vibration sensors are described,and the FBG vibration sensors with cantilever beam and flexure hinge structure are summarized.The existing FBG vibration sensors are analyzed from three directions and optimization suggestions are put forward.Finally,the development of FBG vibration sensors is predicted and prospected.